4PCS 5V 2 Channel 5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino UNO R3 MEGA 2560 1280 DSP ARM P

4PCS 5V 2 Channel 5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino UNO R3 MEGA 2560 1280 DSP ARM P
sku: 4001282380755
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$7.53
Shipping from: China

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